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인기 있는 Word Problems >

The sum of a number times 9 and 25 is at least 21.

해법

T h e s u m o f a n u mb er t im es 9 an d 25 i s a t l e a s t 21.

해법

x \geq - \frac{4}{9}

솔루션 단계

Represent the number with

x

A.T.Q.:

x \cdot 9 + 25 \geq 21

x

해결 대상

, x \cdot 9 + 25 \geq 21 : x \geq - \frac{4}{9}

x \geq - \frac{4}{9}

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